Manually delete old .tmp files from hidden folder to free up disk space!
Just a house-keeping tip that I thought other people might find helpful:
I finally found the hidden folder that houses the auto-recover files created when Storyline 2 crashes and I was astounded to discover that there were more than 20GB of files in there! That explained why my virtual machine was always using up 3-4 times more space than I thought it should, based on the files and programs I had installed on there. It appears that, although Storyline automatically creates the .tmp files, it does not automatically delete them when newer files are created, so it is a good idea to check that folder on a regular basis and delete old versions that are no longer relevant to keep them from hogging all of your hard drive space.
For anyone who does not know how to find a hidden folder in Windows (I'm using Windows 7), open a folder window and click on the 'Organize' pull-down menu at the top-left of the window and choose, "Folder and search options". In the window that pops up, go to the 'View' tab and click the radio button beside "Show hidden files, folders and drives" under "Hidden files and folders", then click 'OK'.
Now, go back to your folder window and look for the path: /AppData/Roaming/Articulate/Storyline (it may differ for others but I found it under C:/Users/[my user name], then AppData/Roaming/ etc....).
Articulate staff member, Ashley Terwilliger, mentioned this path in another post about finding auto-recovery files (https://community.articulate.com/discussions/articulate-storyline/storyline-2-autorecovery-auto-save-where-do-i-find-the-file#reply-212826):
If there are unsaved pending changes, an auto recover file is created for the project under the /AppData/Roaming/Articulate/Storyline path. This auto recover file is named using a format like this:
<name of the file witout .story extension><creation time stamp of the file>.tmp
So if you were working on a file called "my sample story.story" the auto recovery name might look like "my sample story635502380729253410.tmp".
I deleted all of the old .tmp files except for the most recent one for each of my projects and it freed up a lot of room and made my whole system run a lot faster. I have now made a shortcut directly to that folder that I keep on my desktop so I can go to it on a regular basis and clear out whatever isn't needed anymore.
Hope that helps someone!